US5388466A - Flow meter - Google Patents

Flow meter Download PDF

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Publication number
US5388466A
US5388466A US07/961,715 US96171593A US5388466A US 5388466 A US5388466 A US 5388466A US 96171593 A US96171593 A US 96171593A US 5388466 A US5388466 A US 5388466A
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US
United States
Prior art keywords
rotor
blades
flow meter
ring
markings
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US07/961,715
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English (en)
Inventor
Theodora A. Teunissen
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Individual
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Individual
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Publication of US5388466A publication Critical patent/US5388466A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/02—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring forces exerted by the fluid on solid bodies, e.g. anemometer
    • G01P5/06—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring forces exerted by the fluid on solid bodies, e.g. anemometer using rotation of vanes
    • G01P5/07—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring forces exerted by the fluid on solid bodies, e.g. anemometer using rotation of vanes with electrical coupling to the indicating device
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/10—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with axial admission
    • G01F1/103—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects using rotating vanes with axial admission with radiation as transfer means to the indicating device, e.g. light transmission

Definitions

  • the invention relates to a flow meter, and in particular, to a flow meter having a helical diffuser and a rotor for measuring volumetric flow of a medium.
  • a flow meter of the specified type is known, for example, from European Patent Specification 0,228,577.
  • a helical diffuser for generating a swirl in order to impinge on axially parallel extending and circumferentially bent blades of the rotor which sets the latter in rotation.
  • Each blade of the rotor has a window designed as an axially parallel slit.
  • the light source of the light barrier is arranged on one side and the light receiver being arranged on the opposite side of the rotor on the housing.
  • the present invention is therefore based on the object of providing an inexpensively producible flow meter which, on account of accurate measuring results even at the smallest rates, can be used universally.
  • the flow meter has a substantially cylindrical housing and a rotor coaxially mounted for rotation in the housing.
  • the rotor includes curved blades having a full surface area.
  • a helical diffuser is disposed in a passage of the housing with the passage being coaxially upstream of the rotor.
  • the diffuser divides a flow medium flowing through the housing into a plurality of streams and generates a swirl so as to rotate the rotor by impinging the blades.
  • a ring member is affixed to and surrounds outer ends of the blades.
  • a signal generator is provided which interacts with the rotor to determine a flow rate of the medium.
  • the ring is expediently designed in one piece together with the blades and the rotor spindle, which benefits both the stiffness and the reduction in mass. Moreover, a rotor produced in one piece allows corresponding assembly costs to be avoided.
  • the counting or measuring signals are obtained by scanning the outer surface of the rotor ring, provided with markings. Since the flow meter consequently does not have to keep a beam path clear for a light barrier, the form of the rotor is simplified.
  • the universal applicability of the flow meter is further increased inter alia by the fact that the medium does not have to be transparent. Apart from this, virtually any number of signals can be generated per revolution.
  • FIG. 1 shows a longitudinal section through a flow meter, on a scale enlarged approximately ten times.
  • FIG. 2 shows a cross-section through the flow meter along the line 1--1 in FIG. 1.
  • the flow meter has an inner housing 1, which is of a tubular design, preferably consists of a plastic material and can be connected at both ends to hose lines.
  • a liquid medium flows through the inner housing 1 in the direction of the arrow 2 from right to left.
  • a diffuser 4 designed as a multi-thread screw or worm.
  • An axial core 5, from which the threads 6 start, is extended forwards on the onflow side into a streamlined body 7. This diffuser divides the inflowing medium up into various part-streams, which thereby receive a swirling motion and are accelerated.
  • a rotor 8 Arranged downstream of the diffuser 5 is a rotor 8.
  • the rotor spindle 9 is mounted with play on the onflow side in a bore 10, formed in the core 5 of the diffuser 4.
  • the rotor spindle 9 is mounted, likewise with play, in a bore 11 which is formed in a narrow traverse 12, passing transversely through the passage 3.
  • the rotor spindle 9 Fastened on the rotor spindle 9 in axially parallel position are three identical blades 13 which are arranged circumferentially distributed and are curved over their extent about one or more, exclusively axially parallel axes of curvature.
  • the thin-walled blades 13 have a full surface area and, in the exemplary embodiment represented, have an axial extent which remains constant over the radial extent.
  • the ends of the blades are fastened on a cylindrical ring 14 coaxial to the rotor spindle 9.
  • the ring 14 represented is of the same width as that of the blades 13, which corresponds to an advantageous configuration. However, the axial extent of the ring may be both greater than and less than that of the blades.
  • an axially symmetrical arrangement of the ring with respect to the blades is not necessary.
  • An arrangement in which the ring is arranged offset in the axial direction in such a way that it leaves the blades clear on one side and projects axially over them to the other side may also be expedient.
  • the ring has a full surface area and end faces lying in parallel radial planes.
  • the curvature of the rotor blades 13 is designed in such a way that the latter are impinged on their concavely curved side by the helical flow formed by the diffuser 5.
  • the rotor comprising rotor spindle 9, blades 13 and ring 14, is expediently designed in one piece. Even with the thinnest-wall design of the blades and of the ring, this produces high strength and dimensional stability with the least rotor mass. At the same time, such a one-piece rotor can be produced with a relatively simple mould in an injection process, for example from plastic material, if the blades are curved only about axes which run parallel to the spindle of the rotor.
  • the configuration and/or arrangement of the ring 14 on the rotor enforces a flowing away of the medium in approximately axial direction and prevents any radial flowing away, in particular at the radially outer ends of the blades 13. Since clearance losses between rotor and surrounding passage are consequently already eliminated to a great extent, the flow energy of the medium is retained completely for the impingement of the blades. It has been shown that the impingement of the blades on the concave side, together with the ring, significantly increases the response sensitivity and plays a part in increasing the measuring accuracy, in particular at lower flow rates.
  • the inside diameter of the passage must be approximately the same as the inside diameter of the ring in order to avoid any radial flowing away of the medium.
  • a multiplicity of markings 16 On the outer circumferential surface 15 of the ring 14 there are formed or arranged a multiplicity of markings 16 on a circular line at equal angular intervals from one another.
  • the markings are preferably depressions worked into the surface during production of the ring; color markings are also possible.
  • the markings 16 are sensed when the rotor 8 is rotating by a light beam 17 directed against the outer surface 15 of the ring 14, for example by a laser beam which passes from outside through a window 18 in the inner housing 1 to strike the outer circumferential surface 15 of the ring 14 in the region of the markings 16 present there.
  • the light beam thus alternately strikes a marking 16 and the annular surface between the markings, and the light returned with varying intensity is focused by a lens 19 arranged externally in front of the window 18 and fed via a fiber optic cable 20 to a sensor 21. From the signals thus obtained, the flow rate per unit of time can be determined.
  • the fiber optic cable 20 is connected to an outside housing 22, which can be screwed on and in which the lens 19 is also exchangeably arranged.
  • the fiber optic cable 20 may have regions which are separate from one another in the longitudinal direction, one of which conducts the light beam directed against the rotor outer surface 15 and passes the returned light pulses through the other region to the optical sensor 21.
  • this device is that, for the generation of signals, it is not dependent on the interruption of a light path and consequently allows a closed ring without windows, completely covering over the blades. Obviously, this device does not allow the generation of a number of signals per rotor revolution corresponding to the number of blades each having a window, but the generation of a multiplicity of signals corresponding to the number of markings present on the circumference of the ring.
  • the significantly increased signal sequence allows the accuracy of the flow meter to be increased in certain applications. It is likewise of advantage that the flow meter described is also suitable for measuring the flow rate of any non-transparent medium.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Measuring Volume Flow (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Paper (AREA)
  • Details Of Garments (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
US07/961,715 1991-05-14 1992-05-11 Flow meter Expired - Lifetime US5388466A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH144091 1991-05-14
CH01440/91 1991-05-14
PCT/EP1992/001037 WO1992021004A1 (de) 1991-05-14 1992-05-11 Durchflussmesser
CA002082882A CA2082882C (en) 1991-05-14 1992-11-13 A rotor type flow meter with optical detection

Publications (1)

Publication Number Publication Date
US5388466A true US5388466A (en) 1995-02-14

Family

ID=25675662

Family Applications (1)

Application Number Title Priority Date Filing Date
US07/961,715 Expired - Lifetime US5388466A (en) 1991-05-14 1992-05-11 Flow meter

Country Status (10)

Country Link
US (1) US5388466A (de)
EP (1) EP0539561B1 (de)
JP (1) JP3254485B2 (de)
AT (1) ATE127216T1 (de)
CA (1) CA2082882C (de)
DE (1) DE59203460D1 (de)
DK (1) DK0539561T3 (de)
ES (1) ES2076765T3 (de)
GR (1) GR3017269T3 (de)
WO (1) WO1992021004A1 (de)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5581041A (en) * 1995-04-18 1996-12-03 Bouchillon; Jerry L. Apparatus for measuring flow of granular particles in conduit
US5747703A (en) * 1993-12-07 1998-05-05 Schlumberger Industries S.A. Method and apparatus for monitoring variation in the current value of a rate of fluid flow through a flow meter
US5827191A (en) * 1995-09-28 1998-10-27 Rosenfeld; Haim Method and a device for monitoring milk volume during breast feeding
WO2001059410A3 (fr) * 2000-02-09 2002-09-06 Noureddine Chajjad Compteur d'eau a helice d'allesage 50 millimetre et de diametre exterieur 54 mm a usage domestique et commercial
WO2003106323A3 (en) * 2002-06-17 2004-04-22 Eltek Spa Device for manufacturing an axial flow meter
WO2004020789A3 (en) * 2002-08-30 2004-07-01 Sensor Highway Ltd Method and apparatus for logging a well using a fiber optic line and sensors
WO2004085974A1 (de) * 2003-03-22 2004-10-07 Imeter B.V. Elektronischer turbinenradgaszähler
US20060266211A1 (en) * 2005-05-31 2006-11-30 Larkin Bruce D Optical position sensing and method
US20060278017A1 (en) * 2005-06-10 2006-12-14 The Boeing Company Shrouded body flow meter assembly
US20100199758A1 (en) * 2009-02-11 2010-08-12 Ecolab Inc. Flow meter
US20140151017A1 (en) * 2001-09-25 2014-06-05 Zoll Circulation, Inc. Heating/cooling system for indwelling heat exchange catheter
US8807521B2 (en) 2010-05-25 2014-08-19 Kerry Dunki-Jacobs Flow control system
US20140276372A1 (en) * 2013-03-15 2014-09-18 Abbott Medical Optics Inc. Phacoemulsification flow rate detection system and method
CN104736252A (zh) * 2012-09-19 2015-06-24 诺信公司 用于流体的计量装置
US20150369375A1 (en) * 2013-02-27 2015-12-24 LOCLAIN S.r. l. Adjustment valve with energy recovery
GB2529490A (en) * 2014-08-19 2016-02-24 Wwws Uk Ltd Spirometer
CN105628110A (zh) * 2014-11-26 2016-06-01 株式会社鹭宫制作所 流量传感器
US9657464B2 (en) 2010-05-25 2017-05-23 Kerry Dunki-Jacobs Flow control system
US10408701B2 (en) 2014-08-01 2019-09-10 Cascade Technologies Holdings Limited Leak detection system
US20220317709A1 (en) * 2019-08-12 2022-10-06 Dheco Energy Self-powered remote control system for smart valve
US20230023497A1 (en) * 2021-07-21 2023-01-26 Intelligent Agricultural Solutions Llc Spray flow sensing with magnetic carrier
US12196586B2 (en) 2021-07-21 2025-01-14 Intelligent Agricultural Solutions Llc Spray flow sensing with optical signature analysis
US12281920B2 (en) 2020-07-17 2025-04-22 Commissariat A L'energie Atomique Et Aux Energies Alternatives Rotor system for measuring the flow rate of a fluid comprising a liquid, and associated equipment

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105841755B (zh) * 2016-04-28 2019-06-25 东北大学 一种改进型光纤涡轮流量计
EP4374142A1 (de) * 2021-07-21 2024-05-29 Intelligent Agricultural Solutions LLC Sprühflussmessung mit optischer signaturanalyse

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2209700A (en) * 1938-03-08 1940-07-30 Frank V Mayo Liquid metering and cost computing apparatus
US3036460A (en) * 1959-04-10 1962-05-29 Jersey Prod Res Co Fluid meter
US3217539A (en) * 1961-04-07 1965-11-16 Pneumo Dynamics Corp Turbine flow meter
US3240063A (en) * 1960-10-27 1966-03-15 Lynch Corp Flowmeter
US3307396A (en) * 1964-02-28 1967-03-07 Rotron Mfg Co Fluid flow measuring device
DE2047785A1 (de) * 1970-09-29 1972-04-06 Siemens Ag Durchflußanzeiger
US3680378A (en) * 1970-09-11 1972-08-01 Fibre Optics Ind Inc Fluid flow rate meter
US3898883A (en) * 1972-01-17 1975-08-12 Kozak Zdenek Stator assembly for flowmeters and the like
EP0031629A1 (de) * 1979-12-21 1981-07-08 Nevamo Inc. Durchflussmesser
US4393723A (en) * 1981-04-16 1983-07-19 Glen Brand Fluid flow meter
US4428243A (en) * 1981-11-13 1984-01-31 Taylor Lionel I A Flowmeters
WO1986000403A1 (en) * 1984-06-21 1986-01-16 Vesinieminen Ky Measuring apparatus for measuring flow and/or its characteristics
EP0228577A1 (de) * 1985-12-12 1987-07-15 Bieo AG Durchflussmesser

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2209700A (en) * 1938-03-08 1940-07-30 Frank V Mayo Liquid metering and cost computing apparatus
US3036460A (en) * 1959-04-10 1962-05-29 Jersey Prod Res Co Fluid meter
US3240063A (en) * 1960-10-27 1966-03-15 Lynch Corp Flowmeter
US3217539A (en) * 1961-04-07 1965-11-16 Pneumo Dynamics Corp Turbine flow meter
US3307396A (en) * 1964-02-28 1967-03-07 Rotron Mfg Co Fluid flow measuring device
US3680378A (en) * 1970-09-11 1972-08-01 Fibre Optics Ind Inc Fluid flow rate meter
DE2047785A1 (de) * 1970-09-29 1972-04-06 Siemens Ag Durchflußanzeiger
US3898883A (en) * 1972-01-17 1975-08-12 Kozak Zdenek Stator assembly for flowmeters and the like
EP0031629A1 (de) * 1979-12-21 1981-07-08 Nevamo Inc. Durchflussmesser
US4395919A (en) * 1979-12-21 1983-08-02 Nevamo Inc. Flow rate meter
US4393723A (en) * 1981-04-16 1983-07-19 Glen Brand Fluid flow meter
US4428243A (en) * 1981-11-13 1984-01-31 Taylor Lionel I A Flowmeters
WO1986000403A1 (en) * 1984-06-21 1986-01-16 Vesinieminen Ky Measuring apparatus for measuring flow and/or its characteristics
EP0228577A1 (de) * 1985-12-12 1987-07-15 Bieo AG Durchflussmesser
US4733570A (en) * 1985-12-12 1988-03-29 Bieo Ag Flowmeter

Cited By (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5747703A (en) * 1993-12-07 1998-05-05 Schlumberger Industries S.A. Method and apparatus for monitoring variation in the current value of a rate of fluid flow through a flow meter
US5581041A (en) * 1995-04-18 1996-12-03 Bouchillon; Jerry L. Apparatus for measuring flow of granular particles in conduit
US5827191A (en) * 1995-09-28 1998-10-27 Rosenfeld; Haim Method and a device for monitoring milk volume during breast feeding
WO2001059410A3 (fr) * 2000-02-09 2002-09-06 Noureddine Chajjad Compteur d'eau a helice d'allesage 50 millimetre et de diametre exterieur 54 mm a usage domestique et commercial
US20140151017A1 (en) * 2001-09-25 2014-06-05 Zoll Circulation, Inc. Heating/cooling system for indwelling heat exchange catheter
WO2003106323A3 (en) * 2002-06-17 2004-04-22 Eltek Spa Device for manufacturing an axial flow meter
US20050097969A1 (en) * 2002-06-17 2005-05-12 Eltek S.P.A. Device for measuring or checking a fluid, in particular for drink vendors, and method for manufacturing said device
US7117595B2 (en) * 2002-06-17 2006-10-10 Eltek S.P.A. Method for manufacturing a conveying element of an axial type flow meter used for drink vendors
US20110139447A1 (en) * 2002-08-30 2011-06-16 Rogerio Ramos Method and apparatus for logging a well using a fiber optic line and sensors
WO2004020789A3 (en) * 2002-08-30 2004-07-01 Sensor Highway Ltd Method and apparatus for logging a well using a fiber optic line and sensors
US20060157239A1 (en) * 2002-08-30 2006-07-20 Rogerio Ramos Method and apparatus for logging a well using a fiber optic line and sensors
US8074713B2 (en) 2002-08-30 2011-12-13 Schlumberger Technology Corporation Casing collar locator and method for locating casing collars
WO2004085974A1 (de) * 2003-03-22 2004-10-07 Imeter B.V. Elektronischer turbinenradgaszähler
CN100387937C (zh) * 2003-03-22 2008-05-14 伊美特有限公司 电子涡轮气体流量计
US7275474B2 (en) 2005-05-31 2007-10-02 Parker-Hannifincorporation Optical position sensing and method
US20060266211A1 (en) * 2005-05-31 2006-11-30 Larkin Bruce D Optical position sensing and method
US7437952B2 (en) * 2005-06-10 2008-10-21 The Boeing Company Shrouded body flow meter assembly
US20060278017A1 (en) * 2005-06-10 2006-12-14 The Boeing Company Shrouded body flow meter assembly
US20100199758A1 (en) * 2009-02-11 2010-08-12 Ecolab Inc. Flow meter
US8069719B2 (en) * 2009-02-11 2011-12-06 Ecolab Usa Inc. Gear flow meter with optical sensor
US8807521B2 (en) 2010-05-25 2014-08-19 Kerry Dunki-Jacobs Flow control system
US11180907B2 (en) * 2010-05-25 2021-11-23 Kerry L. Austin-Dunkijacobs Flow control system
US9657464B2 (en) 2010-05-25 2017-05-23 Kerry Dunki-Jacobs Flow control system
US10385553B2 (en) * 2010-05-25 2019-08-20 Kerry Dunki-Jacobs Flow control system
US20170254054A1 (en) * 2010-05-25 2017-09-07 Kerry Dunki-Jacobs Flow control system
CN104736252A (zh) * 2012-09-19 2015-06-24 诺信公司 用于流体的计量装置
CN104736252B (zh) * 2012-09-19 2018-11-30 诺信公司 用于流体的计量装置
US20150190837A1 (en) * 2012-09-19 2015-07-09 Nordson Corporation Metering device for a fluid
US10155242B2 (en) * 2012-09-19 2018-12-18 Nordson Corporation Metering device for a fluid
US20150369375A1 (en) * 2013-02-27 2015-12-24 LOCLAIN S.r. l. Adjustment valve with energy recovery
US10458554B2 (en) * 2013-02-27 2019-10-29 Loclain S.R.L. Adjustment valve with energy recovery
US9597229B2 (en) * 2013-03-15 2017-03-21 Abbott Medical Optics Inc. Phacoemulsification flow rate detection system and method
US20140276372A1 (en) * 2013-03-15 2014-09-18 Abbott Medical Optics Inc. Phacoemulsification flow rate detection system and method
US10408701B2 (en) 2014-08-01 2019-09-10 Cascade Technologies Holdings Limited Leak detection system
GB2529490A (en) * 2014-08-19 2016-02-24 Wwws Uk Ltd Spirometer
GB2529490B (en) * 2014-08-19 2018-02-28 Smart Respiratory Products Ltd Spirometer
US10561340B2 (en) 2014-08-19 2020-02-18 Smart Respiratory Products Limited Spirometer
EP3026401A3 (de) * 2014-11-26 2016-08-17 Kabushiki Kaisha Saginomiya Seisakusho Durchflusssensor
CN105628110A (zh) * 2014-11-26 2016-06-01 株式会社鹭宫制作所 流量传感器
US20220317709A1 (en) * 2019-08-12 2022-10-06 Dheco Energy Self-powered remote control system for smart valve
US11747835B2 (en) * 2019-08-12 2023-09-05 Donghae Eco Energy Ltd. Self-powered remote control system for smart valve
US12281920B2 (en) 2020-07-17 2025-04-22 Commissariat A L'energie Atomique Et Aux Energies Alternatives Rotor system for measuring the flow rate of a fluid comprising a liquid, and associated equipment
US20230023497A1 (en) * 2021-07-21 2023-01-26 Intelligent Agricultural Solutions Llc Spray flow sensing with magnetic carrier
US12188797B2 (en) * 2021-07-21 2025-01-07 Intelligent Agricultural Solutions, Llc Spray flow sensing with magnetic carrier
US12196586B2 (en) 2021-07-21 2025-01-14 Intelligent Agricultural Solutions Llc Spray flow sensing with optical signature analysis

Also Published As

Publication number Publication date
DK0539561T3 (da) 1995-09-18
DE59203460D1 (de) 1995-10-05
JPH05508231A (ja) 1993-11-18
GR3017269T3 (en) 1995-11-30
ATE127216T1 (de) 1995-09-15
EP0539561B1 (de) 1995-08-30
CA2082882A1 (en) 1994-05-14
ES2076765T3 (es) 1995-11-01
JP3254485B2 (ja) 2002-02-04
WO1992021004A1 (de) 1992-11-26
CA2082882C (en) 2002-09-10
EP0539561A1 (de) 1993-05-05

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